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26
power from the circuit when the door is opened.
A POWER ON -OFF toggle switch is mounted on
the side of the cabinet.
The power supply may be used to furnish power
for any of the following equipment:
a. MI -11612 Consolette (Type 76-B).
b. MI -11613 Consolette (Type 76-B1).
c. MI -11613-A Consolette (Type 76-B2).
d. MI -11613-A1 Consolette (Type 76-B2).
e. MI -11613-B Consolette (Type 76-B2).
f.
MI -11613-C Consolette (Type 76-B4).
INSTALLATION
Mounting
The MI -11301-B Power Supply is designed for
wall mounting and is provided with two mounting
brackets.
Refer to the mounting dimensions
diagram, figure 18. The power supply should be
mounted near the Consolette to reduce wiring, but
not closer than three feet to avoid hum induction.
Connections
All connections should be made to the terminal
board at the left of the chassis. Conduits may be
attached through the knockouts in the side of the
case. The screw -type terminals are numbered and
the corresponding numbers, with their power
supply connections, are shown in the schematic
diagram figure 21.
Size and type of wire and
conduit are, listed in the Conduit List on page 11.
Loudspeaker Field Supply
To connect one, two, or three 1,000 -ohm, 10
-
watt loudspeaker fields, such as the 64-A or 64-B
Electrodynamic Speakers, proceed as follows:
a. Remove the jumper between terminals 19
and 20 on the power supply terminal board.
b. Connect the loudspeaker fields
between
these same two terminals. If two or three fields are
used, connect the fields in series.
c. Omit one, two, or three 1,000 -ohm sections
of resistor R-1, corresponding to the number of
loudspeaker fields in the circuit. This is done by
moving the connection of either lead to resistor
R-1.
(The 600 -ohm section of R-1 is not to be
used.) R-1 is mounted on the back of the hinged
chassis.
Emergency Switch
A toggle switch is mounted on a bracket at the
lower center of the chassis. This switch has two
positions, REGULAR and EMERGENCY. When
-212
2
6*
I
SIDE VIEW
10
5-
32
15
1
FRONT VIEW
M-140341
Figure 18-Mounting Dimensions (M1-11301-8 Power Supply)
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